Finding the Fourth Proportional to 6,876.72, 10,319.40 and 2,772.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,876.72 : 10,319.40 = 2,772.72 : x
2. Step 2: Convert to fraction form
   6,876.72/10,319.40 = 2,772.72/x
3. Step 3: Cross multiply
   6,876.72x = 10,319.40 × 2,772.72
4. Step 4: Simplify right side
   6,876.72x = 28,612,806.77
5. Step 5: Solve for x
   x = 28,612,806.77/6,876.72
6. Step 6: Final answer
   x = 4,160.82